I installed a minimal CentOS 7 install with kvm. First time using centos. I had problems with the network bridge and I think that couses the warning. Before I messed with the network configs I started the virt-manager with no warning. The warning is (google didn't find anything): ** (virt-manager:3271): WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-6toETv9jX8: Connection refused vi /etc/sysconfig/network-scripts/ifcfg-eno1 TYPE=Ethernet #BOOTPROTO=static DEFROUTE=yes IPV4_FAILURE_FATAL=no IPV6INIT=no IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_FAILURE_FATAL=yes IPV6_ADDR_GEN_MODE=stable-privacy NAME=eno1 UUID=e3db9960-823f-409c-ad23-18eef0be6b73 DEVICE=eno1 ONBOOT=yes #IPADDR=192.168.123.180 #PREFIX=24 #GATEWAY=192.168.123.254 #DNS1=22.214.171.124 #DNS2=126.96.36.199 IPV6_PEERDNS=yes IPV6_PEERROUTES=yes IPV6_PRIVACY=no BRIDGE=br0 The bridge vi /etc/sysconfig/network-scripts/ifcfg-br0 TYPE=Bridge BOOTPROTO=static NAME=br0 UUID=e3db9960-823f-409c-ad23-18eef0be6b73 DEVICE=br0 ONBOOT=yes IPADDR=192.168.123.180 PREFIX=24 NETMASK=255.255.255.0 GATEWAY=192.168.123.254 DNS1=188.8.131.52 DNS2=184.108.40.206 There're also files getting created named ifcfg-br0-1, ifcfg-br0-2, ifcfg-br0-3, ... . Is this normal?